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jekas [21]
2 years ago
12

In 2012, there were about 313 million people in the United States, and just under 9 million of them had assets of $1 million or

more. At the same time, there were 8,336,697 people in New York City, and 727,100 of them had assets of $1 million or more. Compute the density of millionaires in the general population for New York City and the whole United States. Based on those numbers, select any of the choices below which are true.
Mathematics
1 answer:
zloy xaker [14]2 years ago
3 0
New York has a density of millionaires more than twice that of the country as a whole. The density of millionaires is about the same for New York City as for the United States. Millionaires seem to prefer New York City to much of the rest of the United States. There is something in the water of New York City that encourages millionaires
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In a café, drinks are priced according to what size they are.
Andrei [34K]
A) Gavin’s drinks altogether cost £9.00
1.50+2.50x3
=1.50+7.50
=£9.00
b) Lian gets back £3.50
1.50+2.00+3.00
=6.50

10.00-6.50=£3.50
8 0
2 years ago
Oil leaks out of a tanker at a rate of r=f(t) liters per minute, where t is in minutes. If f(t)=Ae^(−kt), write a definite integ
Slav-nsk [51]

Answer:

The definite integral expressing the total quantity of oil, 'V', which leaks out of the tanker in the first hour is given as follows;

V = \int\limits^{60}_0 {A \cdot e^{(-k \cdot t)}} \, dt

Step-by-step explanation:

From the question, we have;

The rate at which oil leaks out of the tanker, r = f(t)

The unit of the oil leak = Liters per minute

The unit of t = Minutes

If \ f(t) = A \cdot e^{(-k \cdot t )}

Therefore, we have;

The definite integral expressing the total quantity, 'V', of oil which leaks out of the tanker in the first hour is given as follows;

V = \int\limits^{60}_0 {A \cdot e^{(-k \cdot t)}} \, dt

Therefore, we have;

\int\limits^{60}_0 {A \cdot e^{(-k \cdot t)}} \, dt = \dfrac{A \cdot e ^{60 \cdot k} - A}{k \cdot e ^{60 \cdot k} }

3 0
2 years ago
It is known that the distance in metres through which a body falls freely varies directly as the square of the time taken. If a
kobusy [5.1K]

Answer:

K = 5 ; 125 m

Step-by-step explanation:

body falls through 80 metres in 4 seconds, find the distance it would fall in 5 seconds.

Given that:

Distance α (Timetaken)²

Distance = d ; Timetaken = t

d = Kt²

K = constant of proportionality

80 = k4²

80 = 16k

K = 80 / 16

K = 5

Distance it would fall in 5 seconds ; t = 5

D = Kt²

D = 5 * 5²

D = 5 * 25

D = 125

It will fall a distance of 125 m in 5 seconds.

4 0
2 years ago
Mark sold 2 7/8 gallons of lemonade. Regan sold 2/3 as much as Mark. How much did Regan sold in gallons? can you solve it step b
adelina 88 [10]

Answer:

Step-by-step explanation:

The phrase "twice as much lemonade" tells you that if Mark sold 2 gallons and Regan sold twice as much as Mark, then Regan sold 2 * 2 which is 4 gallons, right?  It's the same with the "2/3 as much".  But since 2/3 is less than 1, the amount after you multiply some number by 2/3 is going to be less than the original number.  

If Mark sold 2 7/8 gallons and Regan sold 2/3 as much, then Regan sold

2\frac{7}{8}*\frac{2}{3}

I teach my algebra students to change that mixed fraction into an improper to make the multiplication easier:

\frac{23}{8}*\frac{2}{3}=\frac{46}{24}=\frac{23}{12}=1\frac{11}{12}

0 0
2 years ago
Shelby is an entrepreneur who has decided to open a small advertising firm. She rents office space at a cost of $25,000 per year
mestny [16]

Answer:

$ 125,000

Step-by-step explanation:

Given,

The amount of rent = $ 25,000,

The salary of assistant = $ 30, 000

Expenses = $ 20,000,

Also, her best alternative is to work elsewhere and to earn a salary of $50,000 per year.

Thus, the investment in the firm = 25000 + 30000 + 20000 + 50000

= $ 125,000,

Now, if she earns zero economic profit,

Then her revenue = investment

= $ 125,000

7 0
2 years ago
Read 2 more answers
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